干旱区地理2017，Vol.40Issue(2)：257-265,9.
1960-2015年新疆塔什库尔干河谷季节性冻土对气候变化的响应
Response of seasonal frozen soil to climate change in Taxkorgan River Valley of Xinjiang duing 1960-2015
摘要
Abstract
Based on the existing research of domestic and foreign scholars,this study focused on the response of seasonal frozen soil to climate change in Taxkorgan River Valley of Xinjiang by using climate diagnostic analysis.The characteristics and trends of seasonal frozen soil in this area were revealed during 1960-2015.The facts of seasonal frozen soil degradation are proved by the objective data in this region.What's more,this paper also predicted the state of seasonal frozen soil when this change trend lasted until 2050.Characteristic parameters including the beginning date of seasonal frozen soil,the ending date of seasonal frozen soil,the number of annual frozen days,the accumulate thickness of the frozen soil,the maximum depth of frozen soil,and so on,and the analyzing methods including climate tendency rate,abrupt climate change and climate change trend were used for analyzing the variation characteristics of seasonal frozen soil in the inter annual and the decade years.The results show as follows:(1) under the background of global warming,the temperature change showed an upward trend in Taxkorgan River Valley of Xinjiang during 1960-2015,it was a strong warming trend,of which the heating rate were 0.03 ℃·a-1,0.29℃· (10 a)-1,0.74 ℃ · (30 a)-1;(2) during the period of 1960-2015,the seasonal frozen soil in the area was degraded,showing that the beginning date of seasonal frozen soil was postponed,the ending date of seasonal frozen soil was advanced,the number of annual frozen days was reduced,the accumulate thickness of seasonal frozen soil was reduced,and the maximum depth of seasonal frozen soil was reduced;(3)during the period of 1960-2015,the degradation trend of seasonal frozen soil in this region had strong sustainability;(4) during the period of 1960-2015,the specific response of seasonal frozen soil to global warming in Taxkorgan River Valley of Xinjiang showed the state of degradation;(5) assume that the climate warming rate (GT) was the annual 0.034-0.046 centigrade,under the background of climate warming,the beginning date of seasonal frozen soil would be postponed for 12-15 days,the number of annual frozen days would reduce 21-27 days,the accumulate thickness of seasonal frozen soil would reduce by 36.3％-46.7％ in 2050 (comparison with 2000).关键词
塔什库尔干/季节性冻土/气候变化/新疆Key words
Taxkorgan/seasonal frozen soil/climate change/Xinjiang分类
天文与地球科学引用本文复制引用
姚作新,李秦,刘卫平,陶淘,孔婷..1960-2015年新疆塔什库尔干河谷季节性冻土对气候变化的响应[J].干旱区地理,2017,40(2):257-265,9.基金项目
中国沙漠气象科学研究基金(Sqj2013009) （Sqj2013009）
国家自然科学基金(51368059)共同资助 （51368059）
